力士乐旋钮调节压力继电器HED8OH-2X/200K14KW R901107369,德国REXROTH旋钮调节压力继电器,购买进口液压、气动、自动化控制工业配件,
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液压系统中的压力控制阀
在液压系统中,压力控制阀可以调定系统主回路或分支回路的压力.按照功能分类,常用的压力控制阀有溢流阀,减压阀,顺序阀和压力继电器等.这些压力控制阀结构上相似,但性能有差别,在系统中的作用也不尽相同.搞清它们的区别与联系,对于学习压力控制回路以至液压系统的分析广片常重要的。
一,溢流阀
功能 溢流阀的功能是通过阀口溢流,使被控系统或回路的压力保持稳定,实现稳压,调压或限压的作用.
特点 按照结构,溢流阀有直动式和先导式两种.对于直动式溢流阀,当压力较高,流量较大时,要求调压弹簧有很大的刚度,调节性能较差,而滑阀的泄漏也使高压控制难以实现,故只能用于低压小流量场合.先导式溢流阀的特点是用先导阀控制主阀,在溢流阀主阀溢流时,溢流阀进口压力可维持为由先导阀弹簧所调定的定值.先导式溢流阀的另一特点是具有远程控制口,可很方便地实现系统卸荷或运程调压。
溢流阀的泄漏油或流经先导阀的油液在返回油祚时有内泄和外泄两种方式.内泄时泄漏油流经的弹簧腔或先导阀弹簧座通过阀体内的连接通道与出油口和通,而外泄是泄露油或流经先导阀的油液被直接单独引回油箱。
应用 溢流阀的主要用途:(1)在定量泵的出口并联溢流阀可调节泵的出口压力;(2)在变量泵的出口并联溢流阀可对系统起到过载保护作用;(3)在回油路上搂入直动式溢流阀可使执行元件运动平稳;(4)利用先导式溢流阀的远程控制口可实现系统卸荷或远程调压.总之,在系统中溢流阀可作为溢流阀,安全阀,背压阀使用,可以调节系统的压力或使系统卸荷.
二,减压阀
功能 减压阀的功能在于使流经减压阀的油液压力降低,并使与减压阀出口连接的回路压力保持稳定.即减压阀的出口压力可维持恒定,不受进口压力及通过流量的影响。
特点 按照结构减压阀也有直动式和先导式两种,分别用于不同场合.
碱压限的阀心处在原始位置上时,它的阀口是打开的,阀的进,出口沟通.阀心由出口处的压力控制,出口压力未达到调定压力时阀口全开,阀心不动.当出口压力达到调定压力时,阀心上移,阀口关小,在调定压力下达到平衡.当减压阀的出口处不输出油液时,它的出口压力仍能够基本保持恒定,此时有少量油液经先导阀流回油箱。
减压阀与溢流阀的主要区别为:(1)减压阀能保持出口处的压力基本不变,而溢流阀则保持进口处的压力基本不变;(2)在不工作时,减压阀的进出油口互通,溢流阀的进出油口不通;(3)减压阀要求外泄,其先导阀的弹簧腔需通过泄油口单独外接油箱,而溢流阀允许内泄,其先导阀弹簧腔通过阀体内的连接通道与出油口相通,不必单独外接油箱。
应用 减压阀主要用于降低系统某一支路的油液压力,在同一系统中得到两个或多个不同压力的回路.常用于夹紧支路,润滑支路或电液动换向阀的控制回路.需要注意的是减压阀具有压力损失,当分支油路比主油路的压力低很多,且流量较大时,可考虑采用高,低压泵分别供油.
三,顺序阀
功能 顺序阀的功能在于利用液压系统中的压力变化,控制油路通断来控制多个执行元件的顺序动作
特点 按照结构,顺序阀也有直动式和先导式两种.直动式顺序阀结构简单,动作灵敏但调定压力较低,较高压力时宜采用先导式顺序阀.根据控制压力来源的不同,顺序阀有内控式和外控式之分,请注意两者图形符号的区别.内控式顺序阀在进油路压力达到设定压力之前,阀口一直是关闭的,达到设定压力后阀口打开,使压力油进入油路;外控式顺序阀阀口的开闭与油路进口压力无关,仅取决于控制油路压力的大小。
顺序阀与溢流阀的主要区别为:(1)当顺序阀的出口与负载油路相通时,泄漏油和先导控制油必须外泄,而溢流阀的出口与回油相通,泄漏油和先导控制油可外泄也可内泄;(2)溢流阀的进口压力是限定的,即阀的调定压力,顺序阀的进口压力由负载决定,顺序阀开启后可随负载增加市进一步升高.
应用 顺序阀的主要用途为:(1)控制多个执行元件的顺序动作;(2)内控式顺序阀可作背压阀使用;(3)与单向阀并联组成平衡阀,锁定执行元件;(4)外控顺序阀可用于双泵供油系统的卸荷.
四,压力继电器
压力继电器是利用液体压力信号控制电气触点通断的液压电气转换元件,当油液的压力达到其设定压力时,压力继电器发出电信号,以控制电气元件动作,实现执行元件的顺序动作或系统的安全保护和动作互锁。
力士乐旋钮调节压力继电器HED8OH-2X/200K14KW R901107369
力士乐REXROTH压力继电器订货号物料号和型号:
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R901125068 HED8OH-20/100K35KS
R901315927 HED8OH-20/100K35S
R901421283 HED8OH-20/100U060K14S
R901108239 HED8OH-20/100U070K14S
R901099808 HED8OH-20/200K14
R901099809 HED8OH-20/200K14A
R901107119 HED8OH-20/200K14AS
R901109530 HED8OH-20/200K14ASV
R901099790 HED8OH-20/200K14AV
R901099811 HED8OH-20/200K14KS
R901099792 HED8OH-20/200K14KSV
R901107369 HED8OH-20/200K14KW
R901125810 HED8OH-20/200K14KWV
R901102362 HED8OH-20/200K14S
R901109074 HED8OH-20/200K14SV
R901099789 HED8OH-20/200K14V
R901148816 HED8OH-20/200K35KS
R901171767 HED8OH-20/200K35S
R901270140 HED8OH-20/200P110K14S
R901139168 HED8OH-20/200P145K14S
R901139169 HED8OH-20/200P185K14S
R901099813 HED8OH-20/200U150K14V
R901099814 HED8OH-20/200U180K14V
R901099793 HED8OH-20/200U185K14V
R901101640 HED8OH-20/350K14
R901107313 HED8OH-20/350K14A
R901108236 HED8OH-20/350K14AS
R901109071 HED8OH-20/350K14ASV
R901099816 HED8OH-20/350K14AV
R901106454 HED8OH-20/350K14KS
R901099817 HED8OH-20/350K14KSV
R901107095 HED8OH-20/350K14KW
R901109069 HED8OH-20/350K14KWV
R901102713 HED8OH-20/350K14S
R901109065 HED8OH-20/350K14SV
R901099815 HED8OH-20/350K14V
R901388617 HED8OH-20/350K35
R901417246 HED8OH-20/350K35AS
R901265207 HED8OH-20/350K35S
R901128257 HED8OH-20/50F004K14SV
R901219262 HED8OH-20/50F010K14V
R901102349 HED8OH-20/50K14
R901108007 HED8OH-20/50K14A
R901107086 HED8OH-20/50K14AS
R901109050 HED8OH-20/50K14ASV
R901099798 HED8OH-20/50K14AV
R901102356 HED8OH-20/50K14KS
R901099800 HED8OH-20/50K14KSV
R901107394 HED8OH-20/50K14KW
R901109049 HED8OH-20/50K14KWV
R901102712 HED8OH-20/50K14S
R901215098 HED8OH-20/50K14SV
R901099796 HED8OH-20/50K14V
R901156058 HED8OH-20/50K35KS
R901231720 HED8OH-20/50K35S
R901101658 HED8OH-20/630K14
R901109035 HED8OH-20/630K14AS
R901109039 HED8OH-20/630K14ASV
R901136386 HED8OH-20/630K14KS
R901307873 HED8OH-20/630K14KSV
R901336213 HED8OH-20/630K14KW
R901109029 HED8OH-20/630K14S
R901101649 HED8OH-20/630K14V
R901369355 HED8OH-20=200K14
R901342162 HED8OH-20=50K14
R901232375 HED8OH-20=50K14S
R987140394 HED8OH20/350K14+PISTOKE
R901102747 HED8OP-20/100K14
R901108229 HED8OP-20/100K14A
R901107790 HED8OP-20/100K14AS
R901162988 HED8OP-20/100K14ASV
R901321355 HED8OP-20/100K14AV
R901107997 HED8OP-20/100K14KS
R901107370 HED8OP-20/100K14KW
R901106509 HED8OP-20/100K14S
R901109028 HED8OP-20/100K14SV
R901108265 HED8OP-20/100K14V
R901437159 HED8OP-20/100K35
R901206318 HED8OP-20/100K35KW
R901127492 HED8OP-20/100K35S
R901354506 HED8OP-20/100P020K14S
R901354507 HED8OP-20/100P030K14S
R901109027 HED8OP-20/100P070K14S
R901102721 HED8OP-20/200K14
R901108023 HED8OP-20/200K14A
R901108003 HED8OP-20/200K14AS
R901109024 HED8OP-20/200K14ASV
R901137607 HED8OP-20/200K14AV
R901108258 HED8OP-20/200K14KS
R901108018 HED8OP-20/200K14KW
R901109010 HED8OP-20/200K14KWV
R901107093 HED8OP-20/200K14S
R901109004 HED8OP-20/200K14SV
R901107397 HED8OP-20/200K14V
R901336909 HED8OP-20/200K35S
R901233431 HED8OP-20/200P110K14S
R901108992 HED8OP-20/200P160K14S
R901106453 HED8OP-20/350K14
R901107326 HED8OP-20/350K14A
R901091138 HED8OP-20/350K14AS
R901108531 HED8OP-20/350K14ASV
R901126082 HED8OP-20/350K14AV
R901107914 HED8OP-20/350K14KS
R901107129 HED8OP-20/350K14KW
R901122124 HED8OP-20/350K14KWV
R901102365 HED8OP-20/350K14S
R901107913 HED8OP-20/350K14SV
R901107330 HED8OP-20/350K14V
R901127494 HED8OP-20/350K35S
R901434285 HED8OP-20/350P120K14KS
R901108252 HED8OP-20/350P140K14S
R901456336 HED8OP-20/350P280K14S
R901107083 HED8OP-20/50K14
R901107999 HED8OP-20/50K14A
R901107396 HED8OP-20/50K14AS
R901123736 HED8OP-20/50K14AV
R901108012 HED8OP-20/50K14KS
R901108249 HED8OP-20/50K14KW
R901106504 HED8OP-20/50K14S
R901140517 HED8OP-20/50K14SV
R901108001 HED8OP-20/50K14V
R901131275 HED8OP-20/50K35
R901336910 HED8OP-20/50K35S
R901159161 HED8OP-20/50K35V
R901245432 HED8OP-20/50U025K14AV
R901108147 HED8OP-20/630K14
R901210429 HED8OP-20/630K14A
R901280745 HED8OP-20/630K14AS
R901171255 HED8OP-20/630K14ASV
R901124650 HED8OP-20/630K14KS
R901315271 HED8OP-20/630K14KW
R901106449 HED8OP-20/630K14S
R901108529 HED8OP-20/630K14V
R901437158 HED8OP-20/630K35
R901251521 HED8OP-20=50K14AS
R987437823 HED8OH-20/100K14SSETTO80BARFALLING
R987411811 HED8OP20/350K14SSETTO280BAR
R971012678 HED8OA-20/350K14S(12.3MPA)
R971012679 HED8OA-20/350K14S(17.2MPA)
R971012681 HED8OA-20/350K14S(21.6MPA)
力士乐REXROTH信号编码器
力士乐REXROTH电子信号编码器
R900032835 VT10468-3X/B0-R0
R900020321 VT10468-3X/B0-RX
R900029055 VT10468-3X/B1-RX
R900051872 VT10468-3X/B2-RX
R900248704 VT10468-3X/B3-RX
R900078012 VT10468-3X/B4-RX
R901174376 VT10468-3X/B6-RX
R900207443 VT10468-3X/B7-RX
R900020307 VT10468-3X/F0-R0
R900020360 VT10468-3X/F0-RX
R900074164 VT10468-3X/F1-R0
R900020309 VT10468-3X/F1-RX
R900053072 VT10468-3X/F2-R0
R900020911 VT10468-3X/F2-RX
R900020325 VT10468-3X/F3-R0
R900020593 VT10468-3X/F3-RX
R900070971 VT10468-3X/F4-RX
R900020306 VT10468-3X/F5-RX
R900020365 VT10468-3X/F6-R0
R900020328 VT10468-3X/F6-RX
R900020914 VT10468-3X/F7-RX
R901237812 VT10468-3X/F7-RX/24VDC
R900207352 VT10406-3X/BX0-2S-RXY
R900705603 VT10406-3X/BXY-0S-RXY
R900075938 VT10406-3X/BXY-1S-RXY
R901214882 VT10406-3X/BXY-4S-R00
R900079605 VT10406-3X/FXY-0K-RXY
R900031910 VT10406-3X/FXY-0S-R00
R900020746 VT10406-3X/FXY-0S-RXY
R900082731 VT10406-3X/FXY-1K-RXY
R900066640 VT10406-3X/FXY-1S-R00
R900020311 VT10406-3X/FXY-1S-RXY
R900724109 VT10406-3X/FXY-1S-RXY/24VDC
R900052968 VT10406-3X/FXY-2K-RXY
R900031616 VT10406-3X/FXY-2S-R00
R900020355 VT10406-3X/FXY-2S-RXY
R901038961 VT10406-3X/FXY-3K-RXY
R900033192 VT10406-3X/FXY-3S-R00
R901010925 VT10406-3X/FXY-4K-RXY
R900020777 VT10406-3X/FXY-6K-RXY
R900769266 VT10406-3X/FXY-6S-RXY
R900063777 VT10406-3X/FXY-7S-RXY
R901090359 VT10399-5X/FXY-B90T-R00
R900750734 VT10399-5X/FXY-B9RT-RXY
R901206765 VT10399-5X/FXY-D90A-R00
R900069817 VT10399-5X/FXY-D9RA-RXY
R900029275 VT10399-5X/FXY-D9RT-RXY
力士乐REXROTH电气配件
力士乐REXROTH放大器接线座和卡座
力士乐REXROTH连接适配器
R900062692 VT10812-2X/32D
R900062584 VT10812-2X/48F
R900713826 VT10812-2X/64G
力士乐REXROTH全闭式板卡插箱
R900784153 VT12302-3X/1
R978009974 VT12302-3X/2-64G DUAL CARD HOLD
力士乐REXROTH 19英寸机架
R900016481 VT19101-1X/1EINFACHMAGAZIN160MM
R900016483 VT19101-1X/2EINFACHMAGAZIN220MM
R901222062 VT19101-1X/3EINFACHMAGAZIN220MM
R900016482 VT19102-1X/1DOPPELMAGAZIN160MM
R900016484 VT19102-1X/2DOPPELMAGAZIN220MM
R901178509 VT19103-1X/1DREIFACHMAGAZIN160MM
力士乐REXROTH安装卡架
R910908569 VT3002-2X/32RD29928
1834486002 VT3002-2-2X/32D
R900776300 VT3002-2X/32=CSA(KARTENHALTER)
R900209648 VT3002-1-2X/15H
R900020153 VT3002-1-2X/32D
R900020153 VT3002-1-20/32D
1834486001 VT3002-1-2X/32F
R900020154 VT3002-1-2X/48F
R900020154 VT3002-1-20/48F
R900991843 VT3002-1-2X/64G
力士乐REXROTH电源和稳定设备
力士乐REXROTH电源模块
R900010937 VT11006-1X/
R900010937 VT11006-12
力士乐REXROTH电容器模块
R900020293 VT11110-1X/
力士乐REXROTH电源模块
R900554828 VT11116-1X/ (MOD.VT11006-1X/+-10V)
力士乐REXROTH集成式供电单元
R900020164 VT-NE30-1X/
R987174925 VT-NE30-1X/
R901082348 VT-NE30-2X/
R900020165 VT-NE31-1X/
R900080049 VT-NE32-1X/
力士乐REXROTH调试设备
力士乐REXROTH带测试装置的维修箱
R900967021 VT-SVTSY-1-1X/1-0-0-1-0/(PRUEFG.+KOFFER)
R900965027 VT-SVTSY-1-1X/1-0-0-1-1/(PRUEFG.+KOFFER)
R901119774 VT-SVTSY-1-1X/1-0-1-0-1/(PRUEFG.+KOFFER)
R900720411 VT-SVTSY-1-1X/1-1-0-0-0/(PRUEFG.+KOFFER)
R901041006 VT-SVTSY-1-1X/1-1-0-0-1/(PRUEFG.+KOFFER)
R900969193 VT-SVTSY-1-1X/1-1-1-0-0/(PRUEFG.+KOFFER)
R901218892 VT-SVTSY-1-1X/1-1-1-0-1/(PRUEFG.+KOFFER)
R900724784 VT-SVTSY-1-1X/1-1-1-1-0/(PRUEFG.+KOFFER)
R900962017 VT-SVTSY-1-1X/1-1-1-1-1/(PRUEFG.+KOFFER)
力士乐REXROTH带测试单元的维修箱
R900945527 VT-VETSY-1-1X/1-1-0-0-0/(PRUEFG.+KOFFER)
R900775241 VT-VETSY-1-1X/1-1-0-0-1/(PRUEFG.+KOFFER)
R900943515 VT-VETSY-1-1X/1-1-0-1-0/(PRUEFG.+KOFFER)
R900944079 VT-VETSY-1-1X/1-1-0-1-1/(PRUEFG.+KOFFER)
R978911933 VT-VETSY-1-1X/1-1-0-A-0
R900962782 VT-VETSY-1-1X/1-1-1-0-0/(PRUEFG.+KOFFER)
R900763220 VT-VETSY-1-1X/1-1-1-0-1/(PRUEFG.+KOFFER)
R900951688 VT-VETSY-1-1X/1-1-1-1-0/(PRUEFG.+KOFFER)
R900951686 VT-VETSY-1-1X/1-1-1-1-1/(PRUEFG.+KOFFER)
R978913860 VT-VETSY-1-1X/1-1-1-A-0
R901253174 VT-VETSY-1-1X/1-2-0-0-0/(PRUEFG.+KOFFER)
R900751296 VT-VETSY-1-1X/1-2-0-1-0/(PRUEFG.+KOFFER)
R901031171 VT-VETSY-1-1X/1-2-0-1-1/(PRUEFG.+KOFFER)
R901049737 VT-VETSY-1-1X/1-2-1-1-0/(PRUEFG.+KOFFER)
R978050422 VT-VETSY-1-1X/1-2-1-1-0/USA
R900951687 VT-VETSY-1-1X/1-2-1-1-1/(PRUEFG.+KOFFER)
R978911206 VT-VETSY-1-1X/1-2-1-A-0
力士乐REXROTH监测模块
力士乐REXROTH用于监测和限制比例阀电流的模块
R901042058 VT-MUXA2-1-1X/V0/1A
R901254583 VT-MUXA2-2-1X/V0/1A
力士乐REXROTH插头和配电缆连接
力士乐REXROTH连接K4阀插头
力士乐REXROTH标准不带灯插头
R987293407 PLUG-IN CONNECTOR 03POLZ4(A)GRAU
R987293408 PLUG-IN CONNECTOR 03POLZ4(B)SCHW
R987293409 PLUG-IN CONNECTOR 03POLZ4(B)SCHWARZ
R900338518 PLUG-IN CONNECTOR 3P Z4 A GDM2009-RE &
R900008908 PLUG-IN CONNECTOR 3P Z4 A GDM2011 BG
R900074683 PLUG-IN CONNECTOR 3P Z4 A GRAU SPEZ
R900338519 PLUG-IN CONNECTOR 3P Z4 B GDM2009-RE &
R900008909 PLUG-IN CONNECTOR 3P Z4 B GDM2011-RE &
液压传动
与机械传动相比。液压传动更容易实现其运动参数(流量)和动力参数(压力)的控制,而液压传动较之液力传动具有良好的低速负荷特性。由于具有传递效率高,可进行恒功率输出控制,功率利用充分,系统结构简单,输出转速无级调速,可正、反向运转,速度刚性大,动作实现容易等突出优点,液压传动在工程机械中得到了广泛的应用。几乎所有工程机械装备都能见到液压技术的踪迹,其中不少已成为主要的传动和控制方式。极限负荷调节闭式回路,发动机转速控制的恒压,恒功率组合调节的变量系统开发,给液压传动应用于工程机械行走系提供了广阔的发展前景。
一、液压传动技术的应用
液压传动技术在近代工业制造中的应用
液压传动有许多突出的优点,因此它的应用非常广泛,如一般工业用的塑料加工机械、压力机械、机床等,行走机械中的工程机械、建筑机械、农业机械、汽车等;钢铁工业用的冶金机械、提升装置、轧辊调整装置等;土木水利工程用的防洪闸门及堤坝装置、河床升降装置、桥梁操纵机构等,发电厂涡轮机调速装置、发电厂等等。
二、液压传动技术的原理与特点
1、液压传动的介绍
液压传动是用液体作为工作介质来传递能量和进行控制的传动方式。液压传动和气压传动并称为流体传动,是根据17世纪帕斯卡提出的液体静压力传动原理而发展起来的一门新兴技术,是工农业生产中应用广泛的技术。
2、液压传动的优点
(1)体积小、重量轻,因此惯性力较小,当突然过载或停车时,不会发生大的冲击,
(2)能在给定范围内平稳的自动调节牵引速度,并可实现无极调速;
(3)换向容易,在不改变电机旋转方向的情况下,可以较方便地实现工作机构旋转和直线往复运动的转换;
(4)液压泵和液压马达之间用油管连接,在空间布置上彼此不受严格限制;
(5) 由于采用油液为工作介质,元件相对运动表面间能自行润滑,磨损小,使用寿命长;
(6)操纵控制简便,自动化程度高;
(7)容易实现过载保护。
液压传动有许多突出的优点,因此它的应用非常广泛,如一般工业用的塑料加工机械、压力机械、机床等,行走机械中的工程机械、建筑机械、农业机械、汽车等,钢铁工业用的冶金机械、提升装置、轧辊调整装置等,土木水利工程用的防洪闸门及堤坝装置、河床升降装置、桥粱操纵机构等;发电厂涡轮机调速装置等等,船舶用的甲板起重机械、船头门、舱壁阀、船尾推进器等,特殊技术用的控制装置、测量浮标、升降旋转舞台等。
3、液压传动的基本原理
液压传动的基本原理是在密闭的容器内,利用有压力的油液作为工作介质来实现能量转换和传递动力的。其中的液体称为工作介质,一般为矿物油,它的作用和机械传动中的皮带、链条和齿轮等传动元件相类似。液压传动是利用帕斯卡原理!帕斯卡原理是大概就是:在密闭环境中,向液体施加一个力,这个液体会向各个方向传递这个力!力的大小不变!液压传动就是利用这个物理性质,向一个物体施加一个力,利用帕斯卡原理使这个力变大!从而起到举起重物的效果!
液压传动在阀门行业也得到很大的应用,如阀门的机床制造加工设备、阀门]液压试验设备、阀门的液压传动装置等。